Dockerfiles

用 Docker 容器服务的方式搭建 nginx/php/mysql/redis/go/node 环境，易于维护、升级。

配置

你可以通过复制 && 修改 .env.example 来自定义构建项目组合

示例:

cp .env.example .env
vi .env

使用

进入项目所在目录： 执行命令：

docker-compose up

如果没问题，下次启动时可以以守护模式启用，所有容器将后台运行：

docker-compose up -d

使用 docker-compose 基本上就这么简单，Docker 就跑起来了，用 stop，start 关闭开启容器服务。
更多的是在于编写 dockerfile 和 docker-compose.yml 文件。

可以这样关闭容器并删除服务：

docker-compose down

3. 测试

将项目源码放到 ~/app 目录下, 并运行

cd src
echo "<?php phpinfo();" > index.php

打开 url 访问 http://localhost/index.php

4. 常用指令

• 帮助

  docker-compose --help
  

• 列出网络 (包括跨群集中多个主机的网络)

  docker network ls
  

• 运行时，指定配置文件

  docker-compose -p java -f docker-compose-tomcat.yml up -d
  

  参数:

  • -p 工程名称, 这里为 java, 代表java 相关配置
  • -f 配置文件
  • -d 后台运行

• 常用shell组合

  # 删除所有容器
  docker stop `docker ps -q -a` | xargs docker rm
  
  # 删除所有标签为none的镜像
  docker images|grep \<none\>|awk '{print $3}'|xargs docker rmi
  
  # 查找容器IP地址
  docker inspect 容器名或ID | grep "IPAddress"
  
  # 创建网段, 名称: mynet, 分配两个容器在同一网段中 (这样子才可以互相通信)
  docker network create mynet
  docker run -d --net mynet --name container1 my_image
  docker run -it --net mynet --name container1 another_image
  

更多帮助信息 docker-compose -h|--help

5. 目录结构

dockerfiles
    |-- services                    # docker 相关服务
    |-- **.yml                      # 通用配置文件
    |-- mirrors                     # source.list 镜像源地址
~/app                               # 工作源码存放目录

Version 3 (docker-composer) 不再支持参数说明

depends_on

笔者解读: 通过配置 networks 参数更好地改进

• depends_on does not wait for db and redis to be “ready” before starting web - only until they have been started. If you need to wait for a service to be ready, see Controlling startup order for more on this problem and strategies for solving it.
• Version 3 no longer supports the condition form of depends_on.
• The depends_on option is ignored when deploying a stack in swarm mode with a version 3 Compose file.

@https://docs.docker.com/compose/compose-file/

links

Warning: The --link flag is a legacy feature of Docker. It may eventually be removed. Unless you absolutely need to continue using it, we recommend that you use user-defined networks to facilitate communication between two containers instead of using --link. One feature that user-defined networks do not support that you can do with --link is sharing environmental variables between containers. However, you can use other mechanisms such as volumes to share environment variables between containers in a more controlled way.

各系统软件源

Ubuntu

系统代号	版本
precise	12.04
trusty	14.04
vivid	15.04
xenial	16.04
zesty	17.04

Debian

系统代号	版本
squeeze	6.x
wheezy	7.x
jessie	8.x
stretch	9.x
buster	10.x

NOTE:
查询自己的Linux版本 cat /etc/issue

git ssh 密钥配置

For your host machine which run git, all the contents of git config --list is stored in files:

• If use git config --system to configure them, they are stored in /etc/gitconfig
• If use git config --global to configure them, they are stored in ~/.gitconfig

@https://stackoverflow.com/questions/52819584/copying-local-git-config-into-docker-container @https://github.com/tomwillfixit/atomci/blob/master/docker-compose.yml

示例:

volumes:
    # Git and ssh config
    - ~/.ssh:/root/.ssh:ro # Change - ssh key needed to push to github
    - ~/.gitconfig:/root/.gitconfig:ro  # Change - git config needed for user details
    #- /tmp/ssh_auth_sock:/tmp/ssh_auth_sock #Static - needed to push to github without prompt

贡献名单

.... 期待你的留名 ....

参考资料

• [官方文档] Dockerfile reference
• [官方文档] Compose file version 3 reference
• [官方文档] Use volumes
• [官方文档] env-file
• [镜像] mysql 镜像说明
• [镜像] php 镜像说明
• [镜像站] 阿里云开源镜像站
• [镜像站] 腾讯开源镜像站
• [镜像站] 网易开源镜像站
• [镜像站] 清华大学开源软件镜像站